Driving mechanism for centrifugal testing-machines.



No. 650,520. Patented may 29, |900.. M. EGGEMAN.

DRIVING MECHANISII FOB CENTBIFUGAL TESTIN` MAGHINES.V

(Application filed Jan. 23, 1900.)

(No Model.)

[NVE/V TOR S m .V

' Nrrnn MORIZ EGGEMAN, OF NEW YORK, N. Y.

DRIVING MECHANISNI FOR CENTRIFUGAL TESTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 650,528, dated May 29, 1900.

Original application tiled October 23, 1399, Serial No. 734,548. Divided and this application filed January 23, 1900. Serial No. 2,500. (No model.)

To all whom, it' may concern,.-

Beit known that I, MORIZ EGGEMAN, a citizen of the United States,residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Driving Mechanism for Cen` trifugal Testing-Machines, of which the following is a specification, reference being had therein tothe accompanying drawings.

My invention relates to that class of centrifugal testing-machines which are adapted to be operated by hand-power and which are employed for testing milk or other liquids for scientific purposes; and my invention has for its object to provide a simple and convenient driving mechanism for this class of machines and which may be constructed at little cost.

In the accompanying drawings, Figure 1 is a sectional elevation of my improved machine. Fig. 2 is a horizontal section on line 2 2 of Fig. l, and Fig. 3 a section on line 3 3 of Fig. 1.

Referring to the drawings, A denotes a bracket adapted, by means of a clampingscrew a, for attachment to a table, shelf, or other support. Secured within ears a aA of the bracket A in any suitable manner, as by clamping-screws a2, are sleeves b and b', affording ball-bearings c for the rotary shaft or spindle C, to which latter is attached, as by a set-screw d, a flanged sleeve cl', to which the rotating disk or drum D is in turn secured, as by screws cl2. Said disk or drum D is provided with a low peripheral liange (Z3. A pin c', attached to the shaft C, is preferably employed for convenience in causing the setscrew d to register with its seat in the shaft C, the said pin c being received in a small notch in the lower end of the sleeve d.

The rotating disk or drum D is provided with a series of elastically-mounted vialholders, each of which consists, preferably, of an open metallic sleeve E, adapted to frictionally clasp the body or enlarged portion of a testing-vial F, 'and a spring-plate e, by which the said sleeve is carried and which is preferably integral with said sleeve. The spring-plates e of the vial-holders are attached near their inner ends to the disk or drum D, leaving their outer ends free. The

necks of the vials F are in practice preferably provided with graduated scales.

G is a cover, the peripheral viiange of which fits snugly within the flange (Z3 of the disk or drum D, so that when the said cover is in place, as represented in Fig. l, the testingvials are safely inclosed within the said cover and disk or drum. The cover G is provided with a central boss g, suitably attached thereto, and within the said boss is housed asmall spring-catch h, adapted to engage annular grooves or recesses c2 c3, formed in the shaft C and suitably located, so that the cover may be retained either in the operative position shown in Fig. l, with the said spring-catch in frictional engagement with the groove c2, or the said cover may be lifted when it is desired to obtain access to the vials either in charging the machine or in moving the vials therefrom, and when the said cover is lifted the said spring-catch will hold the said cover in raised position by reason of its frictional engagement with the groove c3. Itwill be understood that the frictional engagement between the springcatch h and the grooves c2 c3 is only sufficiently strong to hold the cover in either of the positions referred to, and the frictional engagement of the said spring-catch with the said grooves can be readily overcome either by lifting or pressing downward with a gentle force exerted on the cover. When the cover is lifted, so as to be out of the Way, the testing-vials F may be readily inserted or removed without entirely removing the cover from the machine, as has been required with similar machines heretofore in use. When the cover has been lifted, as referred to, the vials may be inserted or removed simply by raising the elastically-supported vial-holders, as denoted by the dotted lines at the left side of Fig. l, a sufficient distance to enable the vials to clear the low fiange d3 of the rotating disk or drum D as the said vials are inserted or taken out.

I is a rotating sleeve fitted for easy movement about the sleeves l) b', said sleeve l being provided with inwardly-projecting pins t', adapted when the said sleeve is lifted slightly to engage the projecting ends of a transverse pin c4, fixed in the shaft C, the

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said pins i and c4 forming a clutch connec tion between the said sleeve and shaft, so that the latter may be rotated bythe former. The sleeve I is rotated by hand-power by means of a strap J, provided at its ends with suitable handles K.

When itis desired to rotate the disk or drum D, the operative takes hold of the handles with which the ends of the strap J are provided, and by pulling upward slightly on the strap, as denoted by the dotted line in Fig. l, the sleeve I is lifted, so that its pins t' will register with and will engage the ends ofthe pin c4, extending through the shaft C, and thus the rotary movement imparted to said sleeve will be communicated to the said shaft. The upward movement of the sleeve I is limited bythe ear a of the bracket A. The sleeve being rotated in one direction with the clu teh-pinsin engagement, the operative can, by slaokening the strap or by reversing the inclination thereof, permit the sleeve to descend to free its clutch-pins from the pin c4, when the movement of the strap, and oonsequently of the sleeve, is reversed for a new rotating impulse, and thus any desired speed may, by repeated baek-and-forth movements of the strap, be imparted to the rotating disk or drum D from the sleeve I through the shaft C, as will be readily understood.

The simple clutch connection between the sleeve I and shaft C, afforded by the pins 'i` and c4, may be cheaply manufactured and is very durable in use, and even should these parts at any time become worn or broken they may be readily replaced at little cost.

I do not herein claim the features of novelty of my improved testing-machine and relating to the means for mounting the testingvials and for permitting them to be conveniently placed in and removed from the rotating disk or drum, as these features are claimed in my application, Serial No. 734,548, filed October 23,1899, of which rapplication this case is a division.

Having thus described my invention, I claim and desire to secure by Letters Patent- The combination with the bracket A, ofthe sleeves b, b provided with ball-bearings, the

p shaft C journaled in said sleeves and provided with the pin c4, a driven part carried by said shaft, and the verticallymovable rotary sleeve I having the pins ,z' to engage the said pin c4 when the said sleeve has been lifted to the proper height.

In testimony whereof I ailix my signature in the presence of two witnesses.

MORIZ EGGEMAN.

Witnesses:

HENRY OALvER, C. M. SWEENEY, 

